spe·cial con·sta·ble
noun/ˌspeʃl ˈkʌnstəbl/
/ˌspeʃl ˈkɑːnstəbl/
- (in the UK) a person who is not a professional police officer but who is trained to help the police force, especially during an emergency
临时警察，纠察（英国在非常时期协助警察维持治安）